Search results for " Color"
showing 10 items of 770 documents
Color-coded duplex endoscopic ultrasound of the adrenals.
2008
Imaging of the adrenals by endoscopic ultrasound (EUS) is a valuable technique for detection and localization of adrenal lesions, but endosonomorphological tumor distinction remains difficult. In this single-center study, the amount of blood flow in common adrenal lesions, such as adrenal adenomas, adrenal hyperplasia, and pheochromocytomas, was visualized by color-coded duplex EUS (CD-EUS) and was retrospectively analysed. Therefore, we reviewed our EUS database to evaluate and correlate the perfusion patterns of common adrenal lesions with histologically confirmed diagnosis, possible malignancy, and endosonomorphological features such as echogeneity, echostructure, and tumor size. CD-EUS …
<title>Textures from stereo-based IR imaging for industrial tire inspection</title>
2000
A conceptual system to produce 3D thermal models of tires for tire inspection and defect characterization is proposed. The system uses registered range and thermal information to build highly detailed 3D models using either a volumetric or mech-based approach. To achieve this goal, two narrow bandpass filters are used in conjunction with two IR cameras to obtain the true temperature of the target body. The thermal information is then translated to texture data and mapped as an overlay onto a 3D model. The textures are realizable through the use of three-component texture maps that include rgb values to specify the texture coordinates in the plane. The objective is to generate a movie loop d…
An experimental study on relationship between LED lamp characteristics and non image-forming
2017
The general aim of the experimental study, presented in this paper, was that to investigate the relationship between the characteristics of five different types of LED (Light Emitting Diode) lamps, which are nowadays those allowing the highest energy consumption reduction, and the humans non image-forming (NIF) reactions.
Lighting in educational environments: An example of a complete analysis of the effects of daylight and electric light on occupants
2013
Abstract Light induces not only visual responses but also non-visual effects, indeed it affects performance, mood, attention and influences the synchronization of the biological clock. Duration, timing, intensity and the spectral power distribution of the light that reaches the eyes can have influence on human circadian rhythm and consequently on health. Given the important impact of the non-visual responses on people wellbeing, developing a model that allows lighting designers to predict them is a fundamental goal. In this paper a case study is reported: a series of measurements were carried out in a University classroom in order to study daylight and electric light characteristics and als…
Vecākā pirmsskolas vecuma bērnu krāsu uztveres sekmēšana tēlotājdarbībā pirmsskolā
2019
Darba nosaukums: Vecākā pirmsskolas vecuma bērnu krāsu uztveres sekmēšana tēlotājdarbībā pirmskolā. Pētījuma mērķis: teorijā un praksē pārbaudīt vai tēlotājdarbībā iespējams sekmēt vecākā pirmskolas vecuma bērnu krāsu uztveres attīstību. Teorētiskajā daļā apskatīts kāda ir tēlotājdarbības nozīme bērna personības vispusīgā attīstībā, ņemot vērā krāsas lielo ietekmi uz bērna un vēlāk arī uz pieauguša cilvēka emocionālo attīstību. Analizēta literatūra saistībā ar mākslas un krāsu attīstošo ietekmi. Teorētiskā daļa balstās uz D. Lambergas, L. Slavas, I. Celmiņas, M. Dobles, E.Ozola, L. Ozola, P. Antona, Ē. Antona, lekciju materiāliem no Doc.,Dr.,paed. D.Kalējas – Gasparovičas, VISC Pirmskolas i…
Optical properties and quantum yield determination in photocatalytic suspensions
2006
Knowledge of the optical properties of photocatalytic suspensions is vital for a correct comparison of their energetic efficiency. In this work, the determination of both absorption and scattering coefficients of aqueous suspensions of commercial TiO2 powders irradiated by monochromatic light was carried out by measuring only one quantity—the transmitted photon flow—as a function of the catalyst mass and by applying an asymptotic form of the Kubelka–Munk solution of the radiative transfer equation. Applying a nonlinear fitting procedure the evaluation of the actual values of absorption and scattering coefficients was carried out. The limit for optically thick media of the Kubelka–Munk equat…
Colorectal cancer defeating? Challenge accepted!
2013
Colorectal tumours are actually considered as aberrant organs, within it is possible to notice a different stage of cell growth and differentiation. Their origin is reported to arise from a subpopulation of tumour cells endowed with, just like the healthy stem cells, self-renewal and aberrant multi-lineage differentiation capacity likely to be called colorectal cancer stem cells (CCSCs). Cancer stem cells (CSCs) fate, since their origin, reflects the influences from their microenvironment (or niche) both in the maintenance of stemness, in promoting their differentiation, and in inducing epithelial-mesenchymal transition, responsible of CSCs dissemination and subsequent formation of metastat…
Calibration and Validation of Algorithms for the Estimation of Chlorophyll-A in Inland Waters with Sentinel-2
2018
The Ocean Color 2 (OC2), Ocean Color 3 (OC3) and Dall'Olmo three-band (TBDO) algorithms used for the estimation of the chlorophyll-a concentration [Chl-a] have been calibrated and validated for Sentinel-2 spectral bands. Measurements of in situ chlorophyll-a, radiometry and simulations with HydroLight have been used for this purpose within the Ecological Status of AQuatic Systems Satellites (ESAQS) Project to estimate water quality in aquatic systems in Spain. The results show that Sentinel-2 spectral bands are suitable for studying the chlorophyll-a concentration in inland waters. The TBDO algorithm have been applied to Sentinel-2 images and satisfactory results have been obtained in Albuf…
Evaluación de las alteraciones psicológicas y de la calidad de vida en pacientes con cáncer colorrectal localizado
2015
En los países desarrollados y en la mayoría del mundo industrializado, el cáncer constituye uno de los mayores problemas de salud siendo una de las enfermedades más prevalentes. En la actualidad, la estimación en España sobre incidencia resalta que el cáncer más frecuente teniendo en cuenta ambos sexos, con una previsión a 5 años, es el cáncer colorrectal. El principal factor pronóstico es el estadio clínico en el momento de la cirugía, pero en los últimos años se han desarrollado diversos programas de tratamiento adyuvante con quimioterapia y radioterapia para el cáncer colorrectal. Un 70% de estos tumores son de localización proximal (colon), mientras que el resto son distales (recto). Es…
Color image quality assessment measure using multivariate generalized Gaussian distribution
2014
This paper deals with color image quality assessment in the reduced-reference framework based on natural scenes statistics. In this context, we propose to model the statistics of the steer able pyramid coefficients by a Multivariate Generalized Gaussian distribution (MGGD). This model allows taking into account the high correlation between the components of the RGB color space. For each selected scale and orientation, we extract a parameter matrix from the three color components sub bands. In order to quantify the visual degradation, we use a closed-form of Kullback-Leibler Divergence (KLD) between two MGGDs. Using "TID 2008" benchmark, the proposed measure has been compared with the most i…